[chang1]

Under $1,000

Kinesis Advantage 360 or ZSA Voyager (split ergonomic keyboards with ortholinear layout).

I ended up buying both. I had chronic wrist pain and weakness for a few years that I thought was caused by an acute injury. Turns out I think it was actually typing. I bought the Advantage 360, and after a few days, my wrist pain disappeared and never came back. When I switch back to a standard keyboard, I can't type for more than an hour before I start feeling discomfort.

[nicoloren]

I bought a Logitech K860 ergonomic keyboard for under $100 for the same reason (wrist pain). Since I use it (2 weeks), the pain alsmot disappeared too.

I wish I bought one years ago.

Also, for less than $100, I have a Kensigton track ball for years.